I have installed Virtualbox 4.3.16 on Ubuntu 14.04 host system. The guest operating system is Win XP. I have installed Guest Addition CD and added a shared folder through settings. For sometime it shown the folder on Network Places and there after, on clicking the icon of the same, it shows an error.
Sometimes i got access just by installing guest Addition CD again, but later on restarting the guest system it gives the same error as "Disk is not accessible. The parameter is incorrect."